ACERBI, F.; BRANCA, A.; BRIZZOLARI, C.; BRUNETTI, G.; CARTURAN, S.; CATANESI, M.G.; CECCHINI, S.; CINDOLO, F.; COLLAZUOL, G.; DAL CORSO, F.; DE ROSA, G.; DELOGU, C.; FALCONE, A.; GOLA, A.; JOLLET, C.; KLIČEK, B.; KUDENKO, Y.; LAVEDER, M.; LONGHIN, A.; LUDOVICI, L.; LUTSENKO, E.; MAGALETTI, L.; MANDRIOLI, G.; MARCHI, T.; MARGOTTI, A.; MASCAGNA, V.; MEREGAGLIA, A.; MEZZETTO, M.; NESSI, M.; PARI, M.; PAROZZI, E.; PASQUALINI, L.; PATERNOSTER, G.; PATRIZII, L.; PIEMONTE, C.; POZZATO, M.; PREST, M.; PUPILLI, F.; RADICIONI, E.; RICCIO, C.; RUGGERI, A.C.; SCIAN, C.; SIRRI, G.; STIPČEVIC, M.; TENTI, M.; TERRANOVA, F.; TORTI, M.; VALLAZZA, E.; VESCO, M.

doi:10.1016/j.nima.2019.163379

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Nucl.Instrum.Meth.A. 2020, vol. 956, p. 163379

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We present the first application of polysiloxane-based scintillators as active medium in a shashlik sampling calorimeter. These results were obtained from a testbeam campaign of a ∼6×6×45 cm 3 (13 X0 depth) prototype. A Wavelength Shifting fiber array of 36 elements runs perpendicularly to the stack of iron (15 mm) and polysiloxane scintillator (15 mm) tiles with a density of about one over cm 2 . Unlike shashlik calorimeters based on plastic organic scintillators, here fibers are optically matched with the scintillator without any intermediate air gap. The prototype features a compact light readout based on Silicon Photo-Multipliers embedded in the bulk of the detector. The detector was tested with electrons, pions and muons with energies ranging from 1 to 7 GeV at the CERN-PS. This solution offers a highly radiation hard detector to instrument the decay region of a neutrino beam, providing an event-by-event measurement of high-angle decay products associated with neutrino production (ENUBET, Enhanced NeUtrino BEams from kaon Tagging, ERC project). The results in terms of light yield, uniformity and energy resolution, are compared to a similar calorimeter built with ordinary plastic scintillators.< Réduire

Mots clés en anglais

Polysiloxane

Scintillator

Shashlik calorimeter

Silicon photoMultipliers

scintillation counter

calorimeter

silicon: oxygen

polymer

wavelength shifter: fibre

energy resolution

detector: design

photon: yield

electron: irradiation

muon: irradiation

pi: irradiation

iron

performance

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Polysiloxane-based scintillators for shashlik calorimeters

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